Network Searching Method for Mobile Devices in No Service State

Solution Overview

Problem

Mobile electronic devices in a no service state quickly consume battery power due to continuous network searching, and existing methods either contradict communication protocol compatibility or fail to resume searching when moving into a valid network area, leading to user dissatisfaction.

Innovation Solution

A network searching method that activates different timers to manage search intervals, entering a power save mode if no network is found after a set active interval, and resuming searches after a longer inactive interval to prolong standby time and conserve power.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the mobile electronic device keeps performing network searching operation at regular intervals, then the device can find and connect to an available network, but the battery power is quickly consumed

Engineering Contradiction:

Improvenetwork connection availabilityVSAvoidbattery power consumption

Core Design Contradiction:

ReliabilityVSUse of energy by moving object

Solution Approach 1:

The patent implements periodic network searching operations with variable intervals. The device performs network searching at regular intervals initially, then transitions to longer sleep intervals when no network is found. This periodic action with increasing intervals reduces power consumption while maintaining the ability to connect to networks when available.

Inventive Principle:

Principle #19Periodic action

Solution Approach 2:

The patent dynamically adjusts the network searching intervals based on the device's state. The search interval is initially set to a shorter duration (e.g., 5 seconds) and the sleep interval is set to a longer duration (e.g., 30 seconds). The device adapts its searching behavior by alternating between active searching and sleeping states, optimizing power consumption while maintaining network availability.

Inventive Principle:

Principle #15Dynamics

2Use of energy by moving object

If the sleep interval is set to a variable value that increases with time in no service state, then power consumption is reduced, but the device may not be able to resume network searching when moving to a valid network coverage area

Engineering Contradiction:

Improvebattery power consumptionVSAvoidnetwork searching resumption capability

Core Design Contradiction:

Use of energy by moving objectVSReliability

Solution Approach 1:

The patent implements periodic network searching operations with variable intervals. The device performs network searching at regular intervals initially, then transitions to longer sleep intervals when no network is found. This periodic action with increasing intervals reduces power consumption while maintaining the ability to connect to networks when available.

Inventive Principle:

Principle #19Periodic action

Solution Approach 2:

The patent changes the timing parameters of network searching based on the device's state. The search interval is initially set to a shorter duration (e.g., 5 seconds) and the sleep interval is set to a longer duration (e.g., 30 seconds). The device adapts its searching behavior by alternating between active searching and sleeping states, optimizing power consumption while maintaining network availability.

Inventive Principle:

Principle #35Parameter changes

3Speed

If the mobile electronic device performs network searching operation frequently, then the device can quickly connect to a network when available, but the standby time in no service state is reduced

Engineering Contradiction:

Improvenetwork connection speedVSAvoidstandby time in no service state

Core Design Contradiction:

SpeedVSDuration of action of moving object

Solution Approach 1:

The patent implements periodic network searching operations with variable intervals. The device performs network searching at regular intervals initially, then transitions to longer sleep intervals when no network is found. This periodic action with increasing intervals reduces power consumption while maintaining the ability to connect to networks when available.

Inventive Principle:

Principle #19Periodic action

Solution Approach 2:

The patent dynamically adjusts the network searching intervals based on the device's state. The search interval is initially set to a shorter duration (e.g., 5 seconds) and the sleep interval is set to a longer duration (e.g., 30 seconds). The device adapts its searching behavior by alternating between active searching and sleeping states, optimizing power consumption while maintaining network availability.

Inventive Principle:

Principle #15Dynamics

Data Source

PatentUS9144019B2Network searching method for reducing power consumption and mobile electronic device using the same

Publication Date: 2015.09.22 WISTRON CORP

AI summary

A network searching method adapted to a mobile electronic device in a no service state is provided. In the method, a first timer is activated. A network searching operation is performed. Whether an available network is found is determined. If the available network is not found, whether a time count of the first timer is smaller than a network searching active interval is determined. If the time count is not smaller than the network searching active interval, a second timer is activated. Before a network searching inactive interval set up by the second timer expires, the mobile electronic device is controlled to remain in a power save mode. If the time count is smaller than the network searching active interval, a third timer is activated. When a sleep interval set up by the third timer expires, the mobile electronic device is controlled to perform the network searching operation again.